Seat frame for a seat arrangement of a vehicle

Abstract

Seat frame for a seat arrangement of a vehicle having a seat substructure, a seat surface supporting structure, an attachment structure and a backrest supporting structure. The seat substructure is arranged on a vehicle floor and the seat surface supporting structure fastens a seat surface element of the seat arrangement thereto. The seat surface supporting structure is movable on the seat substructure and/or on the attachment structure. The backrest supporting structure fastens a backrest element of the seat arrangement thereto. The backrest supporting structure is pivotably movable on the seat substructure. The backrest supporting structure is pivotable out of a first use position of the seat frame into a second use position of the seat frame. In the second use position, the backrest supporting structure acts on the seat surface supporting structure and forces the seat surface supporting structure out of the first use position into the second use position.

The invention claimed is: 
     
       1. A seat frame for a seat arrangement of a vehicle, wherein the seat frame comprises a seat substructure, a seat surface supporting structure, an attachment structure, a backrest supporting structure and a latching element on a backrest strut of the backrest supporting structure, wherein the seat substructure is configured to be arranged on a vehicle floor of a vehicle, wherein the seat surface supporting structure is configured to fasten a seat surface element of the seat arrangement thereto, wherein the seat surface supporting structure is movably articulated on the seat substructure and/or movably articulated on the attachment structure, wherein the backrest supporting structure is configured to fasten a backrest element of the seat arrangement thereto, wherein the backrest supporting structure is articulated on the seat substructure in a pivotably movable manner and the latching element is releasably latched to the seat substructure in a seating position,
 wherein the backrest supporting structure is pivotable out of a first use position of the seat frame into a second use position of the seat frame, wherein in the second use position the backrest supporting structure acts on the seat surface supporting structure and forces the seat surface supporting structure out of the first use position into the second use position. 
 
     
     
       2. The seat frame for a seat arrangement of a vehicle as claimed in  claim 1 , wherein the attachment structure further comprises a bearing surface for the seat surface supporting structure, wherein the backrest strut of the backrest supporting structure extends in a first use position transversely to the bearing surface of the attachment structure from a first strut end to a second strut end, wherein the backrest strut is articulated in the region of the bearing surface in a pivotably movable manner on the seat substructure, wherein the first strut end is present in a region below the bearing surface and the second strut end is present in a region above the bearing surface. 
     
     
       3. The seat frame for a seat arrangement of a vehicle as claimed in  claim 1 , wherein the attachment structure further comprises a recess into which the seat surface supporting structure engages and/or the seat substructure has a recess into which the seat surface supporting structure may engage. 
     
     
       4. The seat frame for a seat arrangement of a vehicle as claimed in  claim 1 , wherein the seat surface supporting structure in the first use position is mounted on the seat substructure, such that a seat surface element arranged on the seat surface supporting structure has a seat surface inclination relative to a horizontal. 
     
     
       5. The seat frame for a seat arrangement of a vehicle as claimed in  claim 1 , wherein the seat surface supporting structure in the second use position is mounted on the seat substructure and on the backrest supporting structure, such that a seat surface of the seat surface element arranged on the seat surface supporting structure forms a plane with the horizontal. 
     
     
       6. The seat frame for a seat arrangement of a vehicle as claimed in  claim 3 , wherein the backrest strut of the backrest supporting structure engages in a second use position into the recess of the attachment structure. 
     
     
       7. The seat frame for a seat arrangement of a vehicle as claimed in  claim 1 , wherein the backrest supporting structure in the second use position engages into a cavity of the seat substructure and/or into a cavity of the attachment structure. 
     
     
       8. The seat frame for a seat arrangement of a vehicle as claimed in  claim 1 , wherein the backrest supporting structure has two backrest struts, wherein the two backrest struts are connected together via a hinge. 
     
     
       9. The seat frame for a seat arrangement of a vehicle as claimed in  claim 8 , wherein the two backrest struts in the first use position enclose an angle α of less than 90°. 
     
     
       10. The seat frame for a seat arrangement of a vehicle as claimed in  claim 8 , wherein the two backrest struts in the second use position are oriented parallel to one another. 
     
     
       11. The seat frame for a seat arrangement of a vehicle as claimed in  claim 1 , further comprises a retaining element which limits a pivoting movement of the backrest strut. 
     
     
       12. The seat frame for a seat arrangement of a vehicle as claimed in  claim 1 , wherein the backrest supporting structure is configured in the manner of a frame. 
     
     
       13. A seat arrangement of a vehicle comprising a seat frame as claimed in  claim 1 . 
     
     
       14. A vehicle comprising a seat arrangement as claimed in  claim 13 . 
     
     
       15. The seat frame for a seat arrangement of a vehicle as claimed in  claim 2 , wherein the backrest strut in the second use position engages into a cavity of the seat substructure and/or into a cavity of the attachment structure. 
     
     
       16. The seat frame for a seat arrangement of a vehicle as claimed in  claim 1 , wherein the latching element is releasably latched to the seat substructure in the first use position.